Updated
Grass Lake
Lake
Cool water — ease in carefully
Use cautionCool water — ease in carefully: water temperature is 69°F, cool enough to cause cold-water shock on a sudden entry.
- Water temperature is 69°F, cool enough to cause cold-water shock on a sudden entry.
lake in Mackinac County, Michigan, United States of America
Interactive map not available
Cool water — ease in carefully
Use cautionCool water — ease in carefully: water temperature is 69°F, cool enough to cause cold-water shock on a sudden entry.
- Water temperature is 69°F, cool enough to cause cold-water shock on a sudden entry. — NOAA buoy PNLM4, as of Aug 22, 1:00 AM UTC
No official beach-advisory feed for Michigan yet — follow posted signs and local guidance.
Live data from NOAA buoy PNLM4 (29.5 mi away), as of Aug 22, 1:00 AM UTC.
Weather at Grass Lake
Sponsored gear checklist
Pack smarter for Grass Lake
Useful gear categories for this kind of water spot. These links open Amazon search results so you can compare current options.
As an Amazon Associate we earn from qualifying purchases.
Frequently asked questions
- Where is Grass Lake?
- Grass Lake is a lake in Michigan.
- What is the water temperature at Grass Lake?
- As of August 22, 2026, the water temperature at Grass Lake in Michigan is 69°F (21°C), measured by NOAA buoy PNLM4, 29.5 miles away.
- Can you swim at Grass Lake?
- Cool water — ease in carefully: water temperature is 69°F, cool enough to cause cold-water shock on a sudden entry. Checked August 22, 2026.
Advertisement
Visitor Reviews
Be the first to share your experience here
Join our community to share your water adventures
Earn badges as you share your experiences!
No reviews yet — share what you know
Been here? A quick note helps the next visitor plan their day. Handy things to mention:
Best Times to Visit
- ›Check for boat launch facilities and fees
- ›Obtain required fishing licenses before arrival
- ›Be aware of lake-specific regulations and restrictions
- ›Monitor water quality reports before swimming
Location & Contact
Michigan
</> Embed this location on your site
Paste this snippet into your website to show a live badge for Grass Lake — free to use with the included credit link.